Final answer:
Repetitions, commonly referred to as 'reps', are the number of times an individual completes a movement during an exercise.
Step-by-step explanation:
Repetitions are indeed the number of times you complete a required movement of an exercise. This is a basic concept in physical training and exercise prescription. Whether you're lifting weights, doing calisthenics, or practicing any form of resistance training, repetitions (often abbreviated as 'reps') are a fundamental part of an exercise routine. They are typically combined with sets, which are a number of cycles of reps that you complete. Counting reps helps in tracking progress and in ensuring that both sides of the body are worked evenly.